Composition characterization of dissolved organic matters in coking wastewater
Composition characterization of dissolved organic matters in coking wastewater
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发表时间：
2012
影响因子：
4.3
通讯作者：
Peng Ping’an
中科院分区：
文献类型：
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作者：
Peng Ping’an
焦化废水是含多种有机污染物的代表性废水，为确定其组成，采用XAD-8树脂对焦化废水中的有机物进行富集分离，将焦化废水中的溶解性有机物分为4个不同的组分：疏水性酸（HOA）、疏水性碱（HOB）、疏水性中性物（HON）和亲水性物质（HIS）。此后，溶解有机碳（DOC），对焦化废水进行了紫外-可见吸收光谱、色度和有机组分的测定，HIS和HOA的DOC值表明这两种组分是DOM的主要组分，分别占总样品的44.3%和32.4%，焦化废水的特征吸收波长分别为200 ~ 250 nm和300 ~ 400 nm，焦化废水的色度主要由HOA和HON组成，其在525 nm和436 nm处的吸光度分别占总色度的42.9%、42.1%和21.4%、15.8%，HIS的主要成分为苯胺、苯酚、喹啉和异喹啉，HOA的主要成分为各种烷基酚，苯胺碱和多环含氮芳族化合物用于HOB和吲哚及其衍生物用于HON。
Coking wastewater is the representative wastewater containing various organic pollutants.In order to ascertain the composition,XAD-8 resin was applied to concentrate and isolate the organic compounds in coking wastewater.Dissolved organic matter in coking wastewater was fractionated into four different fractions: hydrophobic acids(HOA),hydrophobic bases(HOB),hydrophobic neutrals(HON) and hydrophilic substances(HIS).Thereafter,the dissolved organic carbon(DOC),ultraviolet-visible(UV) absorption spectroscopy,chroma and the organic component were determined.The DOC values of HIS and HOA showed these two were the main fractions of DOM,comprising 44.3% and 32.4% of the total sample.The characteristic absorption wavelength of coking wastewaater ranged from 200 nm to 250 nm and 300 nm to 400 nm,and the intension order was HISHOAHONHOB.The chroma of coking wastewater was composed of HOA and HON,and their absorbance at 525 nm and 436 nm contributed 42.9%,42.1% and 21.4%,15.8% of the total.The dominant compounds were aniline,phenol,quinoline and isoquinoline for HIS,various alkyl phenols for HOA,aniline bases and polycyclic nitrogen-containing aromatics for HOB and indole with its ramifications for HON.